include/asm-ppc/backlight.h

   1 /*
   2  * Routines for handling backlight control on PowerBooks
   3  *
   4  * For now, implementation resides in arch/ppc/kernel/pmac_support.c
   5  *
   6  */
   7 #ifndef __ASM_PPC_BACKLIGHT_H
   8 #define __ASM_PPC_BACKLIGHT_H
   9
  10 /* Abstract values */
  11 #define BACKLIGHT_OFF   0
  12 #define BACKLIGHT_MIN   1
  13 #define BACKLIGHT_MAX   0xf
  14
  15 struct backlight_controller {
  16         int (*set_enable)(int enable, int level, void *data);
  17         int (*set_level)(int level, void *data);
  18 };
  19
  20 extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type);
  21 extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data);
  22
  23 extern int set_backlight_enable(int enable);
  24 extern int get_backlight_enable(void);
  25 extern int set_backlight_level(int level);
  26 extern int get_backlight_level(void);
  27
  28 #endif